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Proceeds from Payment for Escrow Holdbacks and Adjustments

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For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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Amount of consolidated retained earnings that represent undistributed (not yet received) earnings from 50% or less owned persons accounted for by the equity method (equity method investees).

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Investments (Details) - USD ($) $ in Thousands	3 Months Ended
Investments (Details) - USD ($) $ in Thousands	Apr. 30, 2016	Apr. 30, 2015	Jan. 31, 2016	Jun. 01, 2015
Investments (Details) [Line Items]
Proceeds from Equity Method Investment, Dividends or Distributions		$ (3,634)
Gain (Loss) on Sale of Investments	$ (192)
Related to Estimated Escrow Proceeds [Member]
Investments (Details) [Line Items]
Accounts Receivable, Net	2,300
Patriot And Big River [Member]
Investments (Details) [Line Items]
Retained Earnings, Undistributed Earnings from Equity Method Investees	18,900		$ 18,700
Proceeds from Equity Method Investment, Dividends or Distributions		$ 3,600
Big River [Member]
Investments (Details) [Line Items]
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	309,900		$ 306,300
Patriot [Member]
Investments (Details) [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired				100.00%
Proceeds from Payment for Escrow Holdbacks and Adjustments	2,300
Gain (Loss) on Sale of Investments	$ 200